Vela 4A
OperatorUSAF
COSPAR ID1967-040A[1]
SATCAT no.2765[2]
Spacecraft properties
ManufacturerTRW
Launch mass225 kilograms (496 lb)
Power120 W
Start of mission
Launch dateApril 28, 1967, 10:01 (1967-04-28UTC10:01Z) UTC
RocketTitan III-C
Launch siteCape Canaveral LC-41
Orbital parameters
Reference systemGeocentric
RegimeHighly Elliptical
Semi-major axis117,619 kilometres (73,085 mi)
Perigee altitude53,631.5 kilometres (33,325.1 mi)
Apogee altitude161,866.1 kilometres (100,578.9 mi)
Inclination19.9°
Period6,690.8 minutes (111.513 h)
 

Vela 4A (also known Vela 7 and OPS 6638[3]) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ERS 18, OV5 1 and OV5 3.[4]

The ship remains in orbit around Earth.

Instruments

See also

References

  1. NASA Goddard Space Flight Center. "Vela 4A". Retrieved 28 September 2019. Public Domain This article incorporates text from this source, which is in the public domain.
  2. Ford, Dominic. "OPS 63". In-The-Sky.org. Retrieved 28 September 2019.
  3. Antonín Vítek. "1967-040A - Vela 7". Space 40. Retrieved 28 September 2019.
  4. Krebs, Gunter. "Vela 7, 8, 9, 10, 11, 12 (advanced Vela)". Gunter's Space Page. Retrieved 28 September 2019.
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